- Understand what IMT, stamp duty, IMI and AIMI each apply to
- See why rates depend on use: permanent home, second home or land
- Learn how the taxable value (VPT) drives the annual IMI bill
- Know how to run an official simulation before you commit
General, independent information, not legal or tax advice. Rules and amounts change: confirm with the official sources at the end of the page.
The four taxes you will hear about
When you buy property in Portugal, including the Azores, the main taxes are IMT (a transfer tax paid at purchase), stamp duty (also paid at purchase), IMI (an annual municipal tax) and sometimes AIMI (an extra annual tax on higher-value properties).
They are separate taxes with separate rules. A common mistake is to budget only for the purchase price and forget the taxes and fees that come on top.
- IMT: one-off tax when you buy
- Stamp duty: one-off tax when you buy
- IMI: yearly tax you keep paying
- AIMI: yearly extra tax for some owners
IMT: the purchase transfer tax
IMT is progressive, meaning the rate rises in steps as the property value rises. The exact brackets and rates change over time, so do not rely on old figures from a blog or forum.
The rate also depends on how the property will be used. Owner-occupied permanent homes usually get more favourable treatment than second homes or investment properties. Rural land and urban property are treated differently too.
| Property use | How IMT generally works |
|---|---|
| Permanent home (habitação própria permanente) | Usually more favourable brackets |
| Second home / investment | Generally higher rates |
| Rural land | Separate rules apply |
| Urban property | Standard urban rules |
Stamp duty at purchase
Stamp duty (Imposto do Selo) is charged on the acquisition of property. For a standard residential purchase it is commonly cited as 0.8% of the price, but some situations differ.
It is usually paid at the same time as IMT, through the same process. Treat it as part of your upfront costs, not an afterthought.
IMI: the annual municipal tax
IMI is paid every year by the property owner. It is calculated by applying a municipal rate to the property's taxable value (Valor Patrimonial Tributário, or VPT).
The VPT is set by the tax authority, not by the asking price. Each municipality in the Azores sets its own IMI rate within limits defined by national law, so the bill varies by island and council.
IMI is based on what I paid for the house.
IMI is based on the VPT set by the tax authority, which can differ from the market price.
There are also temporary exemptions in some cases, for example for certain renovated or newly classified properties, but eligibility rules are specific. Confirm your situation officially.
AIMI for higher-value properties
AIMI is an additional annual tax aimed at higher-value property holdings. It applies above certain value thresholds, which are set by law and can change.
Most ordinary homebuyers do not pay AIMI, but owners of several properties or high-value homes should check. The rules distinguish between individuals and companies.
How to simulate on the Portal das Finanças
The Portuguese tax authority provides official simulators so you can estimate IMT and stamp duty before you buy. This is the safest way to get current figures.
- Go to the Portal das Finanças website
- Find the IMT and stamp duty simulator section
- Enter the property value and intended use
- Read the estimated IMT and stamp duty
- Confirm the result with a professional before committing
Budget for the taxes before you fall in love with the house.
Frequently asked questions
Do I pay IMT and stamp duty at the same time?
Usually yes, both are handled as part of the purchase process. Confirm the exact procedure with your lawyer or notary.
Is IMI paid every year?
Yes, IMI is an annual municipal tax based on the property's taxable value (VPT).
What is the stamp duty rate?
For a standard residential purchase it is commonly cited as 0.8%, but some situations differ. Confirm the current rate officially.
Do I need to pay AIMI?
Most ordinary buyers do not, but it applies above certain value thresholds. Check your situation with an accountant.
Can I estimate my taxes online?
Yes, the Portal das Finanças has official simulators for IMT and stamp duty.
Are there tax exemptions for buyers?
Some temporary exemptions exist for specific cases, but eligibility is narrow. Confirm with the tax authority or a professional.
Property taxes in the Azores follow national Portuguese rules: IMT and stamp duty at purchase, IMI every year, and AIMI for some higher-value owners. Rates and thresholds change, so use the Portal das Finanças simulator and confirm with a qualified professional before you commit.